Grow strong, my comrade … that you may stand Unshaken when I fall; that I may know The shattered fragments of my song will come At last to finer melody in you; That I may tell my heart that you begin Where passing I leave off, and fathom more.

The individual succumbs, but he does not die if he has left something to mankind.

Progress is the increasing control of the environment by life.

Never mind your happiness; do your duty.

It came to me that reform should begin at home, and since that day I have not had time to remake the world.

History is mostly guessing; the rest is prejudice.

Does history warrant the conclusion that religion is necessary to morality - that a natural ethic is too weak to withstand the savagery that lurks under civilization and emerges in our dreams, crimes and wars? ... There is no significant example in history, before our time, of a society successfully maintaining moral life without the aid of religion.